HomeFish encyclopediaRay-finned fishesFlatfishesLefteye floundersWeak lefteye flounder Weak lefteye flounder (Arnoglossus debilis) Scientific name: Arnoglossus debilis Gilbert, 1905 The Weak lefteye flounder (Arnoglossus debilis) is a marine fish of the family Bothidae. Native range: Pacific Ocean, Hawaiian Islands, Line Islands and off the south coast of Lombok, Indonesia. New record from the northeastern Indian Ocean region. BiologyDorsal soft rays (total): 112-117; Anal soft rays: 84 - 89Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameArnoglossus debilisFamilyBothidae (Lefteye flounders)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length17.0Depth range150–440 m (492–1444 ft)EnvironmentMarine; demersal; depth range 150 - 440 mClimateTropicalDistributionPacific Ocean: Hawaiian Islands, Line Islands and off the south coast of Lombok, Indonesia. New record from the northeastern Indian Ocean region.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026